diff --git a/litellm/router.py b/litellm/router.py
index 67a16c16885..6d7a388fc20 100644
--- a/litellm/router.py
+++ b/litellm/router.py
@@ -8535,8 +8535,8 @@ class Router:
             _azure_fallback_key = _model if _model.startswith("azure/") else "azure/{}".format(_model)
             _fallback_entry = litellm.model_cost.get(_azure_fallback_key) or {}
             _fallback_resolves = (
-                _fallback_entry.get("max_input_tokens") is not None
-                or _fallback_entry.get("max_tokens") is not None
+                (_fallback_entry.get("max_input_tokens") or 0) > 0
+                or (_fallback_entry.get("max_tokens") or 0) > 0
                 or (_fallback_entry.get("input_cost_per_token") or 0) > 0
             )
             if _fallback_resolves: